Fastener for watch straps



Dec. 20, 1927.

1,653,457 A. A. GOLDSTEIN FASTENER FOR WATCH STRAPS Fi-led May 1'7. 1926 l atented Dec. 1Z0, 1927.

UNITED STATE-S 1,653,457 PATENT, EFF/ICE.

AARON A. eotns'rnln, or B FFALO, NEW YORK.

FASTENER "FOR WATCH STRAPS.

' Application filed May 17,

"The principal objects of the invention are to eliminate the dlscomfor't occasioned in the use of non-elastic wrist strapsfor watches,

I and to provide a fastener which will be easy to fasten and will-hold the strap securely with a flexible tension.-

A further object is to prolong the life of the strap by eliminating the cutting or breaking of the leather. I p

The principal feature of the invention consists in the novel construction of a fastener and its arrangement with a strap, whereby the fastener is adapted to a liinited sliding movement on the strap against a spring tension.

In the drawings, Figure 'l is a perspective View of a wriststrap showing my improved fastener applied thereto.

Figure 2 is a perspective detail of the inner plate of the fastener.

Figure 3 is a perspective detail of the compression spring used in the fastener.

Figure 4 is a perspective detail of the open metal box memberwhich is located in the strap.

Figure 5 is a detail of the perforated strap end to receive the metal box member.

Figure 6 is a plan view showing the box member and spring assembled in the strap, the outer casing of the fastener being displaced therefrom.

Figure 7 is a plan detail of the end of the strap which engages the fastener member.

Figure 8 is a plan detail of the inner side of the fastener.

Figure 9 is a plan detail of the inner side of the strap end for engaging the fastener showing the adjustable feature thereon.

It is well known that leather and fabric straps for holding wrist watches are decidedly uncomfortable to wear on account of the binding effect upon the arm which impedes circulation and makes disagreeable marks on the flesh and the present invention overcomes these objections in a very simple and practical manner.

The strap 1 is formed with a slot 2 therein arranged longitudinally thereof adjacent to one end. Within this strap is placed a rectangular metal lining 3 which is the same thickness as the strap.

A plate elcomposed of thin sheet metal has a pair of lugs 5 stamped therefrom, the width of said lugs being a sliding fit in the central orifice of the rectangular lining 3 and said lugs are spaced apart a distance 1926. Serial No. mates.

slightly over half the length of the inner length of the lining.

A'co'i-led compression 6 is insertedbetween one of t-helugs 5 and the end of the lining 3.

The plate 4 is preferably bowed slightly from end to end and the ends thereof are turned outwardly to form the flanges 7.

A sleeve 8 shaped to fit in a snug sliding fit over the strap 1 is adapted to fit over the plate 1 and the flanged ends 7 thereof engage the ends of the sleeve and holds the plate securely in position within the sleeve.

The inner side of the sleeve is perforated with a key-hole perforation 9 adapted to receive a stud 10 secured to the other end of the strap 1-. This stud is preferably adjustable in the end of the strap and is secured to a short length of strap 11 con nected with a loop 12 encircling the strap '1.

A plurality of holes 13 are arranged in the strap ends and the stud may be shifted to either one of these holes as may be desired and it is fastened securely in the adjustable member so that it cannot be pulled through the hole or accidentally lost.

When the stud is inserted into the key hole slot in the sleeve 8, the tension on the strap is imparted to the sleeve and from the sleeve to the plate 4 through the engaging flanges 7 the plate 4 being thus moved longitudinally in relation to the slot 2 and its lining 3, consequently the tension is exerted against the coiled spring.

A wrist Watch strap equipped with a fastener such as described will grip firmly on the arm without binding and a very desirable condition is thus achieved.

The construction of the fastener is extremely simple and the cost of same is very low, thus enabling it to be used on a very inexpensive strap.

The fastener is shown and described as being attached to a leather strap but it will of course be understood that it can be attached to a fabric strap if desired.

What I claim as my invention is 1. In a fastener for watch straps, the combination with the strap, of a fastener element slidably mounted on and embracing the strap, and a spring engaging said strap and fastener element and enclosed thereby and exerting a constricting pressure on: said strap.

r 2. In a fastener for watch straps, the combination with the strap having an opening therein, of a fastener element slidably mounted on the strap directly over and enclosing said opening, means extending inwardly from said fastener element into said opening, and a compression spring arranged in said opening and engaging the extending means of the fastener element. t

3. In a fastener for Watch straps, the combination with thestrap of a fastener element slidably mounted on the strap, a longitudinal slot cut in the strap intermediate of its Width, a metal member liningsaid slot, a lug extending from the fastener element into and moving in said lined slot, and a coiled tension spring arranged Within said lined slot having one end engaging one end of the slot lining and the other end engaging said extending lug.

4. In a fastener for Watch straps, the combination With a strap having a longitudinal slot therein, of a sleeve snugly encircling said strap and slidable thereon, a plate secured in said sleeve having a lug extending into the slot in said strap, a spring arranged in said slot and engaged by said lug, a fastening slot in said sleeve. and a fastener element secured to the strap at the end farthest from the sleeve and adapted to be secured in said fastening slot.

5. In a fastener for Watch straps, the combination With the strap having a longitudinal slot therein, of a fastener member snugly encircling said strap and slidable thereon, a spring arranged in said slot and engaged by said fastener member, a key-- shaped slotarranged longitudinally in the inner side of said fastener member, and a adjustably secured in the end of the strap opposite the end on Which the fastener element is engaged.

7. In a fastener for Watch straps, the combination with the strap having a longi-,

tudinal slot therein, of a fastener element snugly encircling said strap and slidable thereon, a spring arranged in said slot and engaged by said fastener element, a fastening slot in said fastener element, a loop slidably arranged on the Wrist strap, an extension from said loop, a stud secured on said extension and a plurality of holes in the end of the strap through Which said stud is inserted to extend into the fasteningslot in 3 the fastener element.

AARON A. GOLDSTEIN; 1 

